Burst Running Shoes:Thanks To Its Lightweight,Sleek And Low-to-the-ground Design As Well As The All-new Sprk Foam,The Burst Stands For Superior Comfort. The Use Of Two Differently Coloured Mono-mesh Layers Creates A Great Visual Effect While Offering The Athlete Plenty Of Breathability. Breathable Two-layered Mesh Upper. Sprk Foam For A Soft,Cushioned Feel. Transition Line Mimics The Natural Gait Pattern. Carbon Rubber For Traction And Durability.